CVE-2019-6111: Apache Mina Sshd

Medium severity, CVSS 5.9. EPSS: 58.2% chance of exploitation in the next 30 days.

An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).

Affected products

  • Apache Mina Sshd: version 2.2.0 only
  • Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
  • Debian Debian Linux: version 8.0 only; version 9.0 only
  • Fedoraproject Fedora: version 30 only
  • Freebsd Freebsd: before 12.0 (fixed in 12.0); version 12.0 only
  • Fujitsu m10-1 Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
  • Fujitsu m10-4 Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
  • Fujitsu m10-4s Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
  • Fujitsu m12-1 Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
  • Fujitsu m12-2 Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
  • Fujitsu m12-2s Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
  • OpenBSD OpenSSH: up to and including 7.9
  • Red Hat Enterprise Linux: version 7.0 only; version 8.0 only
  • Red Hat Enterprise Linux Eus: version 8.1 only; version 8.2 only; version 8.4 only; version 8.6 only
  • Red Hat Enterprise Linux Server Aus: version 8.2 only; version 8.4 only; version 8.6 only
  • Red Hat Enterprise Linux Server Tus: version 8.2 only; version 8.4 only; version 8.6 only
  • Siemens Scalance x204rna Eec Firmware: before 3.2.7 (fixed in 3.2.7)
  • Siemens Scalance x204rna Firmware: before 3.2.7 (fixed in 3.2.7)
  • Winscp Winscp: up to and including 5.1.3

Published 2019-01-31. Last modified 2026-06-17.